Hi everybody,
I suppose that for everyone who lives on the topside of the globe it's also pretty cold right now...
Because of this cold I notice that my engine shakes more when it's not on temperature.
By logging I can see that the SOI in earlier than in my SOI maps
When looking in the mapping I can see that the SOI is corrected and advanced the engine is not at optimum temperature (90°) and/or when the air temperature is lower then 18°c.
So off course this explains why the engine shakes more and makes more noise.
Now I whas wondering why this is configuerd and if this an and/or situation.
I suppose that the timing is advanced so you have more heat in the chamber so you can heat up the cylinders faster. Is that rigth?
Also, as stated, there are different maps correcting this, the engine temperature and the air temperature.
Both say to advance from 0,5 up to 2,5 degrees of cranck depending on the conditions.
SOI Corrction based on temp.PNG
What i whas wondering is if this is cumulative or not?
Meaning that: If it says to advance 1° when Air temp is -10° and, it says to advance 1° when the enginetemp is at 0° that it advances the timing from 2°?
Would i hurt to reduce the advancement of the SOI correction to reduce vibrations in cold weather or would this just result in my engine taking more time to get up to temperature? Or would i be better to simply increase the pilot injection to reduce vibrations ?
Thank you for you input.
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